Measuring and testing – Hardness
Patent
1982-05-18
1983-12-13
Swisher, S. Clement
Measuring and testing
Hardness
72 31, 73 87, 73432R, G01N 340
Patent
active
044198850
ABSTRACT:
A method of verifying the stress rolling of a metallic rim includes the steps of taking a first hardness reading of the surface that is to have been stress rolled, taking a second hardness reading of a reference surface that has not been stress rolled and comparing the readings so that the first hardness reading will be significantly higher than the second only if the surface has been stress rolled.
REFERENCES:
patent: 2527612 (1950-10-01), Youngblood
patent: 2559016 (1951-07-01), Grossmann
Holmstrom Roy C.
Liggett John V.
Rockwell International Corporation
Swisher S. Clement
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